PHOSPHORIC ACID FUNCTIONALIZATION OF PARA-ARAMID FIBER AND ITS EFFECT ON THE MECHANICAL PROPERTY OF PARA-ARAMID SHEET
The mechanical properties of para-aramid sheet are mainly depended on the interphase property between para-aramid chopped fibers and fibrids.However,the chemical inertness and smooth surface of para-aramid chopped fiber lead to the poor interfacial adhesion between para-aramid chopped fibers and fibrids.In this study,para-aramid fiber was functionalized by phosphoric acid solution to prepare higher strength para-aramid sheet.The surface morphology and chemical composition of treated and untreated fibers were characterized by scanning electron microscopy,atomic force microscopy,and X-ray photoelectron spectroscopy,respectively.The results showed that phosphoric acid functionalization can obviously cause changes of the morphology,increase the surface roughness,and improve the surface oxygen-containing active groups of para-aramid chopped fibers.These can optimize the interphase property between para-aramid chopped fibers and fibrids by increasing mechanical interlock effect and interfacial compatibility.Via the measurement of tensile strength of the produced para-aramid sheets,it can be concluded that treatment with 20%PA for 2h at40℃ is the optimum processing condition.And underthis condition,the tensile strength of produced para-aramid sheet can be improved from 2.41 to 3.41 kN/m with an increment of 41.49%.
para-aramid fiber phosphoric acid functionalization para-aramid sheet tensile strength
Meiyun Zhang Zhiping Su Zhaoqing Lu
Shaanxi Province Key Laboratory of Papermaking Technology and Specialty Paper,College of Bioresource Shaanxi Province Key Laboratory of Papermaking Technology and Specialty Paper,College of Bioresource
国际会议
第五届制浆造纸新技术国际研讨会(ISETPP)暨第三届国际造纸与环境学术大会(IPEC)
广州
英文
1-6
2016-11-07（万方平台首次上网日期，不代表论文的发表时间）